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A revision of the genus Nothosaurus (Reptilia: Sauropterygia) from the Germanic Triassic, with comments on the status of Conchiosaurus clavatus


Published 1996
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The systematic revision of the genus Nothosaurus from the Germanic Triassic (Muschelkalk, lower and middle Keuper) results in the recognition of five valid species. These are N. edingerae, N. giganteus, N. juvenilis, N. marchicus, and the genotypical species, N. mirabilis. The holotype of Conchiosaurus clavatus from the base of the middle Muschelkalk is unequivocal evidence of the synonymy of Conchiosaurus with Nothosaurus. Since Conchiosaurus has priority, it must be declared a nomen oblitum to preserve the genus name Nothosaurus. Intrageneric relationships of the species as reconstructed by cladistic analysis match the stratigraphic distribution of the species. The first occurrence of the genus is Nothosaurus cf. N. marchicus in the early lower Muschelkalk; the latest occurrence is Nothosaurus edingerae from the middle Keuper (Gipskeuper). Paranothosaurus is a junior synonym of Nothosaurus and supports faunal interchange between the Germanic and Alphine Triassic at the time of the Anisian-Ladinian boundary

Includes bibliographical references (p. 79-82)

The systematic revision of the genus Nothosaurus from the Germanic Triassic (Muschelkalk, lower and middle Keuper) results in the recognition of five valid species. These are N. edingerae, N. giganteus, N. juvenilis, N. marchicus, and the genotypical species, N. mirabilis. The holotype of Conchiosaurus clavatus from the base of the middle Muschelkalk is unequivocal evidence of the synonymy of Conchiosaurus with Nothosaurus. Since Conchiosaurus has priority, it must be declared a nomen oblitum to preserve the genus name Nothosaurus. Intrageneric relationships of the species as reconstructed by cladistic analysis match the stratigraphic distribution of the species. The first occurrence of the genus is Nothosaurus cf. N. marchicus in the early lower Muschelkalk; the latest occurrence is Nothosaurus edingerae from the middle Keuper (Gipskeuper). Paranothosaurus is a junior synonym of Nothosaurus and supports faunal interchange between the Germanic and Alphine Triassic at the time of the Anisian-Ladinian boundary

Fieldiana series has been published as Geological Series by Field Columbian Museum (1895-1909) and Field Museum of Natural History (1909-1943), and as Fieldiana: Geology by Chicago Natural History Museum (1945-1966) and Field Museum of Natural History (1966-1978). Fieldiana Geology New Series No. 1 began June 29, 1979


Volume Fieldiana, Geology, new series, no. 34
Publisher Chicago, Ill. : Field Museum of Natural History
Pages 96
Possible copyright status In copyright. Digitized with permission of the Chicago Field Museum. Contact dcc@library.illinois.edu for information.
Language English
Call number 3906573
Digitizing sponsor University of Illinois Urbana-Champaign
Book contributor University of Illinois Urbana-Champaign
Collection biodiversity; fieldiana

Full catalog record MARCXML

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PEOPLE ALSO FOUND
Biodiversity Heritage Library
by Brunner von Wattenwyl, Karl, 1823-1914
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